Lloyd ... I don't understand this method ???? The atomic decay method ?
The 3 ways I know of, for examining objects in space are as follows
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A Light Curve
In this scenario you would observe the apparent brightness of an object over a period of time. If the 'brightness' decreased then you could say that the object is moving away from us, the observers. Once you have a standard candle of known luminosity you can now calculate the recession speed of the object. I have never used this method myself.
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A Light Spectrum
In this scenario you would observe the light spectrum of Calcium H or Calcium K of the object, and check the received electromagnetic 'barcode' against Calcium H or K heated on the lab bench. Then using the formula [math]\left\{ \lambda\prime / \lambda\circ - 1 \right\} c\circ = v [/math] . you can calculate the recession speed of the object
This formula gives me a blueshift value for the Andromeda galaxy of 300Klm/sec towards us and for the Coma Cluster a recession (redshift) of 300,000 Klm/sec
(sorry about the crappy formula, but I'm just learning Latex and having fun)
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Hubble's Constant
in this scenario, v = Ho x d .. where there are 3.2 light years in a parsec and the value of Hubble's constant is 72 klm / sec / megaparsec
Using this formula I got a recessional value for the Coma cluster of 7128Klm/sec
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These are my own calculations, so please don't rely on them if your thinking of going there![]()
I understand Atomic Decay. What I don't understand is how to use it to determine the true motions of objects in space. Can you explain it ?
cool bananas ... greg


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